Grounded electric plug adapter



FIG. 1 is a front elevation view illustrating my new design for a Grounded Electric Plug Adapter;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a left side elevation thereof;

FIG. 4 is a right side elevation thereof;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a grounded electric plug adapter, as shown and described. 